Experimental studies of shell-side fluid flow and heat transfer characteristics in a submerged combustion vaporizer. (October 2016)

• Record Type: Journal Article
• Authors: Han, Chang-Liang; Ren, Jing-Jie; Wang, Yan-Qing; Bi, Ming-Shu
• Is Part Of: International journal of heat and mass transfer. Volume 101(2016:Oct.)
• Page Start: 436
• Page End: 444
• Publication Date: 2016-10
• Subjects: Submerged combustion vaporizer -- Direct-contact heat transfer -- Water bath -- Tube bundle -- Overflow; Heat -- Transmission -- Periodicals; Mass transfer -- Periodicals; Chaleur -- Transmission -- Périodiques; Transfert de masse -- Périodiques; Electronic journals; 621.4022
• DOI: 10.1016/j.ijheatmasstransfer.2016.05.080
• Languages: English
• ISSNs: 0017-9310

Abstract

Highlights: An unabridged SCV module was set up with the bubble behavior visualized. The evolution of the circulation flow in the water bath was observed. The two-phase mixture heat transfer over the staggered tube bundle was analyzed. Effects of operating parameters on the heat transfer characteristic were examined. A new dimensionless correlation for the shell-side heat transfer was proposed. Abstract: In this paper, an experimental apparatus was set up to study the two-phase mixture flow and heat transfer over a horizontal tube bundle on the shell-side of the submerged combustion vaporizer (SCV). The influences of the static water height, superficial flue gas velocity and heat load on the heat transfer characteristics were systematically examined. The experimental results revealed some interesting observation of the SCV, such as the circulation flow of water bath accompanying a great deal of gas bubbles and the highly thermal efficiency due to the direct-contact heat transfer between the highly turbulent two-phase mixture and staggered tube bundles. Finally, based on the experimental data, a new dimensionless, semi-theoretical empirical correlation was developed for two-phase mixture convection heat transfer over the staggered tube bundle on the shell-side of SCV. The discussion and correlation provided a framework for designing the SCV.